Ratchet threading tool



y, w. w.vosPER RATCHET THREADING TOOL Filed Sept. 28, 1925 Patented May17, 1927.

UNITED STATES PATENT OFFICE.

WILLIAM W. VOSPER, OF TOLEDO, OHIO, ASSIGNOB TO THE TOLEDO PIPETHREADING MACHINE COMPANY, OF TOLEDO, OHIO, .A CORPORATION OF OHIO.

RATCHET THREADING TOOL.

Application filed September 28, 1925. Serial No. 59,956.

This invention relates to threading tools, especially for pipe.

This invention has utility when incorporated in die or chaser toolmountiugs.

`Referring to the drawings:

Fig. 1. is a side elevation of an embodi ment of the invention as inuse;

Fig. `2 is section on an enlarged scale on the line Hall, Fig. 1;

Fig. 3 is a section on the line lllwlll, Fig. 2;

Fig. 4 is an end elevation, with parts bnoken away, of the device ofFig. l; andv Fig. 5 is a fragmentary side elevation of the device ofFig. 1.

Bar 1, as a lever, is inserted in socketl 2 of ring 3. This ring 3 hasinternal bearing 4 -coacting with external bearings 5. The bearings 5have internal bore 6 as a guide sleeve in supporting this tool upon thearticle of work as pipe 7. Between the bearings 5, this sleeve has anendless annular series of teeth 8 abrupt in each direction to serve as aratchet. The ring 3 has radial 5 way 9 diametrically disposed as to seatl() in which is mounted stem 11 having external button 12 4having wedgedthread connection 13 with the plunger 11. This seat l0 has guide opening14 for the stem or plunger l1 with pair of diametrically disposednotches 15 to be engaged by pin 16. Helical spring 17, about this .stem11, nor- Inally draws this pin 16 against the outer end of this seat 1G,or if in registry, holds such in the seats 15 for the one portion ofthis helical spring 17 abuts enlargement 18 terminating 1n pawl face 19on one side with bevel face 20 on the other. Thispawl, accordingly, mayrhe held away from the ratchet 8 when the pin 116 is out ot the slots ornotches '15 while with this pin 16 in the notches '15, the handle 1 mayhe operated for pawl actuating connection with the ratchet in onedirection. By withdrawing the pawl and rotating 186 to again allow thepin 16 to enter the seats or notches 15, the pawl 19 may be eiective forthe opposite direction of rotation of the ratchet 8.

From this ratchet 8 there radially extends annular series of columnsherein shown as mounted on flange 21 from the ratchet. These columns areshown as comprising major column ortion 22 and minor column portion 23.T ese divided columns 22, 23, have therebetween seat 24. The columnportion has outwardly facingshoulder 25. The column portion 23 hasoutwardly facing shoulder 26.` These shoulders 25, 26, are in an annularseries. There is disposed in the seat 24 between the column portionpairs, chasers 27 having outwardly facing shoulders 23 between theadjacent shoulders 25, 26, so that ring 29 as anchored by screws 30, maypositively hold the annular series of chasers 27 against any radialshifting as Well as snugly position such dies longitudinally, for thisring 29 closes the axially open seats 24. These chasers 27, in practice,as in pipe threading operations, co-operate progressively in the depthof thread cutting upon the pipe 7. The bore portions 6 provide a guidealong which the tool may progress as the thread is developed. In thiscutting operation, the forward or advance die edge portions 31 asentering the work`7 sluit oil turnings 32 which are free to pass byclearance portion 33 on the column portion 23, and thence freely passoutward through opening 34 between the columns. There is thus provided aready spill region, in this multiple die or chaser tool, with such clearance wav 34 one accessible for the introduction of lubricant to thework.

This die as herein disclosed is one simply produced, as a unit, fromcast stock as to the ratchet and column structure. The bore or guideportions 6 may have clearance 35 therebetween for giving lightness totheV structure, as well as reducing the bearing regions upon the pipe orcylindrical stock. The extent of the shoulder or flange 21 relatively tothe ratchet may vary according to the diameter of stock for which thetool designed. 1n the operation of the ratchet lever arm, the tool maybe operated for either direction of rotation as desired whether thecutting Work be either right hand or left hand. The tool may be backedolf by merely reversing the tool. Furthermore, the Withdrawal of thetool allows the ring to be slipped-on and ofi' the ratchet forsubstitution of ratchets or for reverse place ment of the ring on thesame ratchet. There is, accordingly, provided herein a simple toolstructure of light weight open for ready clearance in the handling ofstock cuttings or turnings which may he efficiently operated.

What is claimed and it is desired to secure by United States LettersPatent is l. A threading tool embod ing a ratchet, a first ring, a pawlmounte by said first ring and positioned for actuating the ratchet, saidratchet providing a bearing sleeve for the first ring, said sleeveinternally serving as a guide, an annular series of divided columnsrising axially from the ratchet sleeve, dies in the divisions ot saidcolumns as seats, a second ring spaced from the sleeve of the columns,and means anchor ing the second ring with the column in die anchoringposition, said columns in the direction ot' the die entering travel.into the material to be threaded having greater radial clearance thanon the after side of said dies, for ready spill of tu rnings trom thematerial outward bet-Ween said columns.

2. A threading tool embodying a ratchet, a series of chasers, an annularseries of spaced chaser carrying columns, one for each Chaser risinglaterally from said ratchet, and

laterally of and concentric with said ratchet an independent holdingring tor said chasers mounted on said columns leaving toward saidratchetrom the ring clearance between the columns for ready spill ofturnings from the material outward between the columns.

A threading tool embodying a ratchet, an vannular series ot spacedcolumns risingr axially trom said ratchet. and axially terminating in auannular series of r-ilioulders, said columns haring radially extendingseats open away lroin the ratchet, dies in said seats haring shouldersapproximating the radial position ot the column shoulders, and a ringcentered by said column shoulders to be abutted by said die shouldersfor maintaining the dies against radial shifting, said ring leavingclearance between the columns for ready spill of turuings from thematerial outward toward said columns.

In Witness whereof I aflix my signature.

lVlLLIAM. lV. VOSPER.

